Digital elevation model and orthophoto of Freya Glacier 2021

DOI

In July 2021 we surveyed the surface of Freya Glacier (Northeast Greenland). On 29th and 31st July 2021, we used a UAV (DJI Phantom 4 RTK) to obtain overlapping image series of the glacier surface. On 29th July, we photographed 80% of the glacier surface (lower part) and finished the drone flights on 31st of July. On 28th and 29th of July 2021, we surveyed ~100 mainly artificial GCPs on the glacier surface using a differential GNSS receiver and a base station. During the survey, surface ablation between 28th and 31st July was less than 0.2 m. Using a structure from motion approach, we could reconstruct 95% of the glacier surface with a very high level of detail and vertical accuracy. The DEM of the glacier has a horizontal resolution of 1m and the elevation has an RMSE at the check points of 0.18 m. The DEM and the orthofoto are projected to UTM (zone 27N, epsg:32627) and to orthometric heights (egm96). The data also contain the glacier outline of Freya Glacier in 2021 as a shapefile.

Identifier
DOI https://doi.org/10.1594/PANGAEA.972888
Related Identifier IsSupplementTo https://doi.org/10.5194/tc-2023-157
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.972888
Provenance
Creator Hynek, Bernhard ORCID logo; Binder, Daniel; Larsen, Signe H ORCID logo
Publisher PANGAEA
Publication Year 2024
Rights Creative Commons Attribution 4.0 International; https://creativecommons.org/licenses/by/4.0/
OpenAccess true
Representation
Resource Type Dataset
Format text/tab-separated-values
Size 4 data points
Discipline Earth System Research
Spatial Coverage (-20.830 LON, 74.390 LAT); Northeast Greenland
Temporal Coverage Begin 2021-07-29T00:00:00Z
Temporal Coverage End 2021-07-31T00:00:00Z